Ryobi 310r manual Inspection and Cleaning, Muffler Reassembly

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MAINTENANCE AND REPAIR INSTRUCTIONS (Continued)

Exhaust

Exit Tube

Screws

Fig. 35

Inspection and Cleaning

1.Check the inlet port of the muffler and outlet port of the cylinder for excessive carbon deposits (Fig. 36). Clean as required.

Inlet Port

Fig. 36

2.Inspect the baffle inside the muffler for carbon build- up. Clean baffle by scraping carbon as required. Use a piece of wire to clear obstructions from the small holes in baffle (Fig. 37).

Fig. 37

If carbon build-up cannot be cleaned, replace the muffler.

3.Inspect the muffler mounting holes for elongation. Replace the muffler if the holes are elongated.

Muffler Reassembly

1.Install a new gasket*. Make sure the arrow stamped into the gasket is to your right. Tuck the tab (with the arrow) between the cylinder and plastic shroud (Fig. 38).

2.Install the muffler with the muffler mounting bolts (see Fig. 35) and torque the bolts to 80-90 in•lb

(9-10.1 N•m).

Muffler Gasket

Fig. 38

* Some earlier units have a muffler gasket with slots.

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Contents OPERATOR’S Manual For Starting Instructions Refer toIntroduction Table of Contents Safety Warnings California Emission RegulationsFueling and PRE-OPERATION During OperationSymbol Signification Safety and International SymbolsAfter Operation Symbol SignificationAssembly Instructions Blower Tube and Nozzle Assembly Both ModelsAssembly Instructions Installing the Vacuum Tubes Optional for Model 310r Installing the Vacuum Tubes to the Blower/VacOIL & Fuel Information Starting STARTING/STOPPING InstructionsStopping Vacuum Operating Procedures Optional for Model 310r Operating ProceduresTypical Operating Positions Maintenance Schedule Maintenance and Repair InstructionsAIR Filter Maintenance Carburetor Adjustment Adjusting the CarburetorWalbro Carburetor Zama CarburetorReplacing the Spark Plug INSPECTING/CLEANING the MufflerExhaust Exit Tube Removal Inspection and Cleaning Muffler ReassemblyCleaning and Storage SpecificationsEngine BlowerTroubleshooting Problem Cause ActionCalifornia Emission Control Warranty Statement Your Warranty Rights and ObligationsRyobi America Corp